Poincaré conjecture
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In the mathematical field of geometric topology, the Poincaré conjecture is a theorem about the characterization of the 3-sphere.
Grigori Perelman
Henri Poincaré
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Jules Henri Poincaré was a French mathematician, theoretical physicist, engineer, and philosopher of science. He is often described as a polymath, and in mathematics as "The Last Universalist", since
Poincaré conjecture
…is a theorem about the characterization of the 3-sphere (the hypersphere that bounds the 4-ball in four-dimensional space). Originally conjectured by Henri Poincaré in 1904, the theorem concerns spaces that locally look like ordinary three-dimensional Euclidean space but which are finite in extent. Poincaré…
Plaque on the birthplace of Henri Poincaré at house number 117 on the Grande Rue in the city of Nancy
The young Henri Poincaré in 1887 at the age of 33
The Poincaré family grave at the Cimetière du Montparnasse
Marie Curie and Poincaré talk at the 1911 Solvay Conference.